University of Southern California Professor Natalia Molina says Día de la Madre, or Mother's Day, is always on May 10 in Mexico, El Salvador and Guatemala -- all of which have large populations in SoCal.
"It can be an all-day celebration where everyone is welcome. Your individual family, your nuclear family, your extended family," Professor Molina said.
Everyone is encouraged to spend the day with their mom, grandmother or an aunt no matter what day of the week that might be -- as long as it's May 10.
"You might have a communal meal that involves something large like slaughtering a pig," Molina said. "It's really, really fun. It's almost like Christmas."